BaseTransaction.java

import java.util.Calendar;

public class BaseTransaction implements TransactionInterface {

    protected double amount;
    protected Calendar date;
    protected String transactionID;

    public BaseTransaction(double amount, String transactionID) {
        this.amount = amount;
        this.transactionID = transactionID;
        this.date = Calendar.getInstance();
    }

    @Override
    public double getAmount() {
        return amount;
    }

    @Override
    public Calendar getDate() {
        return date;
    }

    @Override
    public String getTransactionID() {
        return transactionID;
    }

    @Override
    public void printTransactionDetails() {
        System.out.println("Transaction ID: " + transactionID);
        System.out.println("Amount: " + amount);
        System.out.println("Date: " + date.getTime());
    }

    @Override
    public void apply(BankAccount ba) {
        System.out.println("Generic transaction applied.");
    }
}